I'm talking about the outboard bushings on arms 1 & 2 where they bolt up to the knuckle. Is the part# for these the one in your pictures of four OE bushings?

I'm sure its been talked about but make sure when using any type of bushing that you tighten bolts with the car on the ground or that
suspension is not relaxed. Otherwise bushings will fail in short order. Mine's a ST185. I've had the Whiteline bushings, no problems as of yet. Does anyone have a pic of a shot poly bush?

Sorry I got mixed up. I believe its the inner ones on arm 1&2 that have Camry part#.

i've heard it from a few people that SWEAR TO HIGH HEAVEN by them, that they do NOT harm the chassis at all.

if an insulator is designed to absorb vibration and noise, and it is replaced with an insulator that does not absorb noise or vibration, where does the 'left over' energy from the road vibration go? directly to the chassis.

my wife experienced it on her 1988 SC MR2 - she had polyurethane bushings, and over time on less than ideal roads, nuts and bolts would rattle so much that they'd fall off.

i replaced my worn out OEM bushings with the TRD bushings... amazingly, even MORE road noise was removed (yes, my OEM bushings were THAT worn out), and the handling was improved tremendously. the ride was noticeably firmer and stiffer, but not jarring or painful like polyurethane.

the sheer amount of 'unforgiveness' of polyurethane is terrible on chassis.

its boils down to a very simple end.

polyurethane for racing vehicles that DO have a disposable chassis.
OEM or similar daily driven vehicles that do NOT have disposable chassis.

I can see your point about energy being transferred to the chassis more with poly bushings, however...

1. I can see this being a real issue on cars with aluminum bushings and heim jointed front ends.

2. Put most cars on a lift and using a pry bar(read 5ft min.) try moving the lower control arm fore and aft. The play you'll see is what happens during hard cornering. My ST185 bushings had alot of play(85K miles). Even Car and Driver thought the originals were soft enough to tell the factory reps they needed revision.

3. Poly bushings have had no detrimental effect on my car. Its slightly harsher on "botts dots" and square edges. Where I live it is a good tradeoff b/c roads are pretty good. My rule of thumb is: as long as the steering wheel and shifter doesn't buzz everything is cool.

4. No one has shown a pic of a properly tightened poly bushing that is shot. I'd be interested to know which bolts/nuts came loose or fell off your wife's car.

5. Be aware of your environment. Cold weather and high air pollution are hard on rubber parts(bushings, CV joints, timing belts etc.) Not everyone will have the same story.